RO102829B1

RO102829B1 - Plug switch for adjustment, when tension is absent, at dry type

Info

Publication number: RO102829B1
Application number: RO143219A
Authority: RO
Inventors: Sorin Lupu; Georgel Cazan
Original assignee: Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Industria Electrotehnica
Priority date: 1989-12-14
Filing date: 1989-12-14
Publication date: 1991-12-30
Also published as: RO102829A2

Abstract

Comutator, cu prize pentru reglaj, în absenta tensiunii, la transformatoare uscate, aplicabil în cazul înfasurarilor trnasformatoarelor cu conexiune stea cu neutru izolat, conform inventiei principale cu brevetul nr.92128, cu contact electric stabilit treptat, prin comprimarea lenta a unui arc, provocata de însurubarea unei tije metalice, si cu telecomanda de conectare a transformatorului, initiata de înaintarea aceleiasi tije catre sfârsitul cursei sale, caracterizat prin aceea ca are toate contactele fixe ale tuturor fazelor montate pe o unica placa suport izolanta, cu contactele fixe având fiecare forma unei placute dreptunghiulare, cu câte o gaura neteda pentru ghidarea subansamblului cu contact mobil în pozitia corecta, subansamblul cu contact mobil fiind, la rândul sau, apasat catre pozitia de contact de un disc rigid, ce face parte din subansamblul mecanic rotativ, a carui însurubare treptata într-o bucsa filetata provoaca înaintarea axului acestui subansamblu catre placa cu contacte fixe si odata cu el, a discului, iar la capatul miscarii de avans al axului, se realizeaza stabilirea contactului pentru comanda de la distanta a conectarii transformatorului, prin suprapunerea pastilei de contact, solidare cu axul, dar izolata electric fata de acesta, peste doua benzi conductoare rigide, ce fac parte din circuitul de telecomanda al transformatorului.Switchgear, with voltage-adjusting sockets, for dry transformers, applicable in the case of insulated neutral star connection trunking machines, according to the main invention with patent no. 92128, with an electrical contact gradually established by the slow compression of a spring, and the transformer connection remote control initiated by advancing the same rod towards the end of its stroke, characterized by having all of the fixed contacts of all the phases mounted on a single insulating support plate, with the fixed contacts each having the shape of a rectangular plungers with a smooth hole for guiding the mobile contact assembly in the correct position, the mobile contact subassembly being in turn pressed to the contact position by a rigid disk which is part of the rotary mechanical assembly whose gradual screwdriving in a threaded bush causes the axle of this cat is the plate with fixed contacts and with it the disc, and at the end of the shaft movement of the shaft, the contact for remote control of the transformer connection is established, by overlapping the contact pocket, which is integral with the shaft but electrically isolated from the over two rigid conductor bands that are part of the transformer's remote control circuit.